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Dipterocarpus kerrii - King

Common Name Kerr's Keruing
Family Dipterocarpaceae
USDA hardiness 10-12
Known Hazards None known
Habitats Frequently gregarious in semi-evergreen and evergreen coastal dipterocarp forests in periodically or seasonally dry climates, on red lateritic soils, on undulating land and hills at elevations below 400 metres[451 ].
Range Southeast Asia - Myanmar, Thailand, Malaysia, Indonesia, Philippines.
Edibility Rating    (0 of 5)
Other Uses    (3 of 5)
Weed Potential No
Medicinal Rating    (2 of 5)
Care
Tender Moist Soil Semi-shade Full sun
Dipterocarpus kerrii Kerr


pokokpokok.blogspot.com
Dipterocarpus kerrii Kerr
pokokpokok.blogspot.com

 

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Summary


Physical Characteristics

 icon of manicon of cone
Dipterocarpus kerrii is an evergreen Tree growing to 40 m (131ft) by 25 m (82ft) at a medium rate.
It is hardy to zone (UK) 10. The flowers are pollinated by Wind.
Suitable for: medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in heavy clay soil. Suitable pH: acid and neutral soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Dipterocarpus cuneatus Foxw. Dipterocarpus obconicus Foxw. Dipterocarpus perturbinatus Foxw.

Habitats

Edible Uses

None known

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.


The oleo-resins obtained from the tree are used in analgesic liniments[373 ].

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Other Uses

An oleoresin is obtained by tapping the tree[373 ]. It is commonly used by local people for caulking boats; making torches, coating wood as a protection against weather; etc[46 , 373 ]. The resin is obtained by cutting a hole in the trunk near the base (about 90 - 150cm from the ground) and then dipping out the resin with a spoon as it collects there. To prolong the flow, a fire made from dead leaves or brushwood is made in the hole at intervals - this burns off the dried resinous film and allows the resin to flow again[64 , 146 ]. An essential oil can be distilled from the resin[373 ]. It is used as a fixative in perfumery and for scenting soaps[373 ]. The tree is a source of keruing timber[884 ]. We have no specific information on the wood, but the general description of keruing timber is as follows:- The heartwood is light red to red brown or purplish red brown; it is clearly demarcated from the 5 - 7cm wide band of sapwood. The texture is coarse; the grain straight or interlocked. The wood is moderately heavy to heavy; moderately hard; somewhat durable, being resistant to dry wood borers, fairly resistant to fungi but susceptible to termites. It seasons slowly, with a high risk of checking and distortion; once dry it is poorly stable to moderately stable in service. It has a high blunting effect on tools due to the presence of silica, stellite-tipped and tungsten carbide tools are recommended; some species are very resinous and can clog tools; there is occasional tearing on quartersawn wood; nailing and screwing are good, but require pre-boring; gluing is correct, but care is required because of the resin. A general construction timber, it is used in carpentry, panelling, joinery, floors, timber frame houses, boxes and crates, veneer etc[848 ].

Cultivation details

Industrial Crop: Hydrocarbon  Management: Standard  Wild Crop

Young trees grow best in the shade of the forest, but become increasingly light-demanding as they grow larger[418 ]. Members of this genus generally only regenerate naturally in the shade of the forest. Seedlings and saplings can persist in dense forest shade for many years. In their first 2 years the young plants cannot tolerate major openings in the canopy, but after they are well established (about 120cm tall) the canopy can be opened up around them to speed up their growth[404 ].

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The PFAF Bookshop

Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

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Propagation

Seed

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

India (Andaman Is.); Indonesia (Kalimantan, Sumatera); Malaysia (Peninsular Malaysia); Myanmar; Philippines; Thailand; Viet Nam

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

None Known

Conservation Status

IUCN Red List of Threatened Plants Status : Status: Critically Endangered A1cd+2cd, B1+2c

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Dipterocarpus alatusApitong, baume de gurjun, gurjun balsam02
Dipterocarpus gracilisTagalog: Panao01
Dipterocarpus grandiflorusApitong00

 

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Author

King

Botanical References

Links / References

For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.

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